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Finding the Fourth Proportional to 256,241.55, 353,606.00 and 143,061.87

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Solution

The fourth proportional to 256,241.55, 353,606.00 and 143,061.87 is: 197,421.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,241.55 : 353,606.00 = 143,061.87 : x
  2. Step 2: Convert to fraction form
    256,241.55/353,606.00 = 143,061.87/x
  3. Step 3: Cross multiply
    256,241.55x = 353,606.00 × 143,061.87
  4. Step 4: Simplify right side
    256,241.55x = 50,587,534,887.91
  5. Step 5: Solve for x
    x = 50,587,534,887.91/256,241.55
  6. Step 6: Final answer
    x = 197,421.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.